#logo {
	margin-left: length; 
	margin-right: auto; 
	text-align: center; 
	background-color: rgba(255, 255, 255, 0.50); 		/*颜色*/
	width: 450px; 
	padding: 50px 0; 
	border-radius: 1px; 								/*角的形状*/
	font-size: 50px;color: FF9999;
  height:50px;
}
.login {
	width: 450px; 
	margin-left: length; 
	margin-right: auto; 
	text-align: center; 
	background-color: rgba(255, 255, 255, 0.50); 		/*颜色*/
	width: 450px; 
	padding: 50px 0; 
	border-radius: 1px; 								/*角的形状*/
	font-size: 16px;
}
.login_user {
	background-color: rgba(255, 192, 203, 0.50);
}
.login_about {
  height:200px;
  font-size: 10px;
  width:200px;margin:0 auto;
}

.background {
  background-image: url(../img/01.jpg);
  background-repeat: no-repeat;
}
